WO2021016745A1 - Display substrate, display device, and manufacturing method and driving method for display substrate - Google Patents
Display substrate, display device, and manufacturing method and driving method for display substrate Download PDFInfo
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- WO2021016745A1 WO2021016745A1 PCT/CN2019/097930 CN2019097930W WO2021016745A1 WO 2021016745 A1 WO2021016745 A1 WO 2021016745A1 CN 2019097930 W CN2019097930 W CN 2019097930W WO 2021016745 A1 WO2021016745 A1 WO 2021016745A1
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- touch
- base substrate
- touch electrodes
- display
- touch electrode
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
- G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Definitions
- the embodiments of the present disclosure relate to a display substrate, a display device, a manufacturing method and a driving method of the display substrate.
- a pixel array of a liquid crystal display panel or an Organic Light Emitting Diode (OLED) display panel usually includes multiple rows of gate lines and multiple columns of data lines interlaced with the gate lines.
- the gate line can be driven by a bonded integrated drive circuit.
- GOA Gate Driver On Array
- a GOA including multiple cascaded shift register units can be used to provide switching state voltage signals (scanning signals) for multiple rows of gate lines of the pixel array, so as to control the multiple rows of gate lines to be turned on sequentially, and the data lines simultaneously
- a data signal is provided to the pixel units of the corresponding row in the pixel array, so as to form a gray level voltage required for each gray scale of the displayed image in each pixel unit, and then display a frame of image.
- Touch screens can be divided into two categories according to different structures: one is an external touch screen; the other is an integrated touch screen.
- the integrated touch screen includes an external (On-Cell) touch screen and an in-cell (In-Cell) touch screen.
- the in-cell touch screen has been widely used because it can reduce the overall thickness of the touch screen and the manufacturing cost of the touch screen.
- At least one embodiment of the present disclosure provides a display substrate, including: a base substrate; a pixel array disposed on the base substrate; a plurality of gate lines extending in a first direction in the pixel array; A touch electrode arranged on the base substrate and extending along the first direction; a plurality of second touch electrodes arranged on the base substrate and located far away from the plurality of first touch electrodes
- One side of the base substrate extends in a second direction that crosses the first direction and crosses the plurality of first touch electrodes; the plurality of first touch electrodes and the plurality of first touch electrodes
- the grid lines are arranged in the same layer.
- the pixel array includes a plurality of pixel units, and each of the plurality of second touch electrodes covers at least two pixel units, and is reused as the The common electrode of at least two pixel units.
- At least one of the second touch electrodes includes an electrode disposed at a position where the at least one second touch electrode crosses the at least one first touch electrode.
- An opening, the orthographic projection of the opening on the base substrate and the orthographic projection of the at least one first touch electrode on the base substrate at least partially overlap.
- the display substrate provided by at least one embodiment of the present disclosure further includes a light shielding layer; the light shielding layer is located on a side of the plurality of second touch electrodes away from the base substrate, and the plurality of gate lines and the The orthographic projections of the plurality of first touch electrodes on the base substrate all fall within the orthographic projections of the light shielding layer on the base substrate.
- the gap between two adjacent second touch electrodes in the plurality of second touch electrodes is also projected onto the base substrate.
- the orthographic projection of the light shielding layer on the base substrate is also projected onto the base substrate.
- the display substrate provided by at least one embodiment of the present disclosure further includes a plurality of data lines extending in the second direction in the pixel array and in a direction perpendicular to the base substrate
- the upper part is located between the plurality of second touch electrodes and the plurality of first touch electrodes, and the gap between two adjacent second touch electrodes in the plurality of second touch electrodes is in the
- the orthographic projections on the base substrate respectively fall within the orthographic projections of the plurality of data lines on the base substrate.
- the display substrate provided by at least one embodiment of the present disclosure further includes: a plurality of first touch electrode traces and a plurality of second touch electrode traces, which are arranged on the same layer as the data line and along the second Direction extension; each of the plurality of first touch electrode traces is connected to at least one of the plurality of first touch electrodes, and the plurality of second touch electrode traces are connected to the plurality of The second touch electrodes are respectively connected.
- the display substrate provided by at least one embodiment of the present disclosure further includes a first insulating layer and a second insulating layer; the first insulating layer is located on the plurality of first contacts in a direction perpendicular to the base substrate. Between the control electrode and the data line, and the plurality of first touch electrodes are connected to the plurality of first touch electrode traces through the via holes on the first insulating layer, and the second insulation The layer is located between the data line and the plurality of second touch electrodes in a direction perpendicular to the base substrate, and the plurality of second touch electrodes pass through the overpass on the second insulating layer The hole is connected with the plurality of second touch electrode traces.
- the base substrate includes a display area and a peripheral area, the pixel array is located in the display area, and the pixel array includes The plurality of sub-pixels arranged in an array in the second direction; the orthographic projection of the plurality of first touch electrode traces and the plurality of second touch electrode traces on the base substrate and the display area
- the orthographic projections of the respective sub-pixels on the base substrate do not overlap, and are located between the orthographic projections of the respective sub-pixels in the display area on the base substrate.
- the base substrate includes a display area and a peripheral area, the pixel array is located in the display area, and the pixel array includes A plurality of sub-pixels arranged in an array in the second direction; the plurality of first touch electrode traces and the plurality of second touch electrode traces are respectively located in the peripheral area.
- the orthographic projection of the plurality of gate lines and the plurality of first touch electrodes on the base substrate is consistent with the respective sub-pixels of the display area
- the orthographic projections on the base substrate do not overlap, and are respectively located between the orthographic projections of the respective sub-pixels of the display area on the base substrate along the first direction.
- the display substrate provided by at least one embodiment of the present disclosure further includes a binding area, which is located on one side of the peripheral area of the base substrate along the second direction; The second direction becomes wider and wider on the side away from the binding area.
- the plurality of first touch electrodes include a plurality of first touch electrode groups, and each of the plurality of first touch electrode groups includes each other At least two first touch electrodes connected in parallel; at least one first touch electrode in the first touch electrode group is respectively connected to one of the first touch electrode traces.
- the pixel array includes M rows and N columns of pixel units, and the display panel includes Q gate lines and Q first touch electrodes, and each adjacent A gate line and a first touch electrode are arranged between the two rows of the pixel units; the display panel further includes N dummy touch electrode traces, the N dummy touch electrode traces and the plurality of The first touch electrode traces are arranged in parallel, and each of the N dummy touch electrode traces is connected to only one first touch electrode group, and each of the N dummy touch electrode traces is arranged at Between two adjacent columns of pixel units; Q and N are both integers greater than or equal to 2.
- At least one embodiment of the present disclosure further provides a display device, including the display substrate provided by any embodiment of the present disclosure.
- At least one embodiment of the present disclosure also provides a method for manufacturing a display substrate, including: providing a base substrate; forming a pixel array on the base substrate; forming a first conductive layer on the base substrate, and On the first conductive layer, a patterning process is used to form a plurality of gate lines extending in a first direction and a plurality of first touch electrodes; on the side of the plurality of first touch electrodes away from the base substrate , Forming a plurality of second touch electrodes extending along a second direction crossing the first direction and crossing the plurality of first touch electrodes.
- the manufacturing method of the display substrate provided by at least one embodiment of the present disclosure further includes: forming an opening on at least one of the plurality of second touch electrodes; and the opening is on the at least one second touch electrode At a position crossing at least one of the first touch electrodes, the orthographic projection of the opening on the base substrate at least partially overlaps with the orthographic projection of the at least one first touch electrode.
- the manufacturing method of the display substrate provided by at least one embodiment of the present disclosure further includes: forming a light shielding layer on the plurality of second touch electrodes, wherein the plurality of gate lines and the plurality of first touch electrodes The orthographic projections of the control electrodes on the base substrate all fall within the orthographic projections of the light shielding layer on the base substrate.
- the manufacturing method of the display substrate provided by at least one embodiment of the present disclosure further includes: in a direction perpendicular to the base substrate and in the plurality of first touch electrodes and the plurality of second touch electrodes. Between the electrodes, a first insulating layer, a second conductive layer, and a second insulating layer are sequentially formed; on the second conductive layer, a patterning process is used to form a plurality of data lines and a plurality of second layers extending in the second direction.
- the orthographic projection of the gap on the base substrate falls within the orthographic projection of the data line on the base substrate, and each of the plurality of first touch electrode traces passes through the first insulating layer
- the via hole is connected to at least one of the plurality of first touch electrodes, and each of the plurality of second touch electrode traces passes through the via hole on the second insulating layer and the plurality of second touch electrodes
- the touch electrodes are connected separately.
- At least one embodiment of the present disclosure provides a method for manufacturing a display substrate, the base substrate includes a display area and a peripheral area, the pixel array is located in the display area, and the pixel array includes In the plurality of sub-pixels arranged in an array in the second direction, a plurality of first touch electrode traces and lines extending in the second direction are formed on the second conductive layer in the peripheral area of the base substrate A plurality of second touch electrode traces.
- At least one embodiment of the present disclosure further provides a method for driving a display substrate, including: in the display stage, providing gate scan signals to the plurality of gate lines, and providing common signals to the second touch electrodes to drive all the gate lines.
- the display substrate performs display; in the touch phase, a touch drive signal is provided to the plurality of second touch electrodes, and a touch detection signal is received at the plurality of first touch electrodes.
- FIG. 1 is a schematic plan view of a display substrate provided by at least one embodiment of the present disclosure
- FIG. 2 is a circuit structure diagram of each sub-pixel provided by at least one embodiment of the present disclosure
- FIG. 3 is a schematic plan view of the wiring of the display substrate shown in FIG. 1;
- FIG. 4A is a schematic plan view of another display substrate provided by at least one embodiment of the present disclosure.
- FIG. 4B is a cross-sectional view along the A-A' direction on the display substrate shown in FIG. 4A;
- 4C is a cross-sectional view of another display substrate provided by at least one embodiment of the present disclosure.
- FIG. 5 is a schematic plan view of the wiring of the display substrate shown in FIG. 4A;
- FIG. 6 is a schematic diagram of a display device provided by at least one embodiment of the present disclosure.
- FIG. 7 is a flowchart of a manufacturing method of a display substrate provided by at least one embodiment of the present disclosure.
- the frame of the display panel is difficult to be further reduced on the basis of the existing manufacturing process (for example, the 9 Mask process, that is, the manufacturing process using 9 mask processes).
- the 9 Mask process that is, the manufacturing process using 9 mask processes.
- the wiring width of its fan-shaped leads is an important factor affecting the frame width of the display panel.
- the number of touch channels of a traditional fully in-cell touch screen is the number of rows*the number of columns. Therefore, a large number of traces at the lower frame of the fully in-cell touch screen is not conducive to achieving a narrow frame design.
- At least one embodiment of the present disclosure provides a display substrate, including: a base substrate; a pixel array arranged on the base substrate; a plurality of gate lines extending in a first direction in the pixel array; and a plurality of first touch electrodes , Arranged on the base substrate and extending along the first direction; a plurality of second touch electrodes are arranged on the base substrate and located on the side of the plurality of first touch electrodes away from the base substrate, along the first direction
- the intersecting second direction extends and crosses the multiple first touch electrodes; the multiple first touch electrodes and the gate lines are arranged in the same layer.
- At least one embodiment of the present disclosure also provides a display device corresponding to the above-mentioned display substrate, a manufacturing method of the display substrate, and a driving method of the display substrate.
- the gate line and the first touch electrode for example, touch detection electrode
- the conductive layer used to prepare the touch electrode can be reduced, the preparation process is simplified, and the production cost.
- a mutual inductance capacitance can be further formed between the common electrode layer and the gate line layer, so that the number of touch channels of the display substrate can be reduced to the number of rows + the number of columns, which greatly reduces The number of touch channels is reduced, the number of touch traces in the lower frame of the display panel is reduced, and the frame is reduced.
- the display substrate may be a liquid crystal display substrate (LCD).
- the liquid crystal display substrate may be an in-plane switching (IPS) or an in-plane switch.
- IPS in-plane switching
- FFS Fringe Field Switching
- TN Twisted Nematic
- VA Vertical Alignment
- the display substrate can achieve touch and display performance.
- FIG. 1 is a schematic plan view of a display substrate provided by at least one embodiment of the present disclosure
- FIG. 4A is a schematic plan view of another display substrate provided by at least one embodiment of the present disclosure.
- the structure of the display substrate in FIG. 1 and FIG. 4A is similar, the difference is that: in the display substrate shown in FIG. 1, the first touch electrode trace connected to the first touch electrode and the second touch electrode The second touch electrode trace is located in the peripheral area of the base substrate (not shown in the figure).
- the first touch electrode trace 15 connected to the first touch electrode 11 and The second touch electrode trace 16 connected to the second touch electrode 12 is located in the display area of the base substrate 100, that is, located in the pixel array.
- FIG. 4B is a cross-sectional view along the A-A′ direction on the display substrate shown in FIG. 4A, and of course, it can also be used to explain the structure of the display substrate shown in FIG. 1 in the A-A′ direction.
- the display substrates provided by various embodiments of the present disclosure will be described in detail below with reference to FIGS. 1, 4A, and 4B.
- the display substrate 1 includes a base substrate 100, and includes a pixel array 110, a plurality of gate lines 13, a plurality of first touch electrodes 11, and a plurality of second touch electrodes disposed on the base substrate 100.
- the control electrode 12 (for example, two second touch electrodes are exemplarily shown in the figure).
- the base substrate 100 can be made of, for example, glass, plastic, quartz or other suitable materials, which are not limited in the embodiments of the present disclosure.
- the base substrate 100 includes a display area and a peripheral area (not shown in the figure), and the pixel array 110 is located in the display area of the base substrate 100.
- the pixel array 110 includes a plurality of pixel units P arranged in an array.
- a display substrate here, an array substrate
- a plurality of gate lines 13 and a plurality of data lines 14 are arranged in an array and intersect to define a plurality of sub-pixels, for example, each of the plurality of pixel units P It includes red, green and blue (RGB) sub-pixels located in the same row, that is, the pixel array 110 includes a plurality of sub-pixels arrayed in a first direction and a second direction.
- RGB red, green and blue
- the pixel array includes M rows and N columns of pixel units
- the display panel includes Q gate lines and Q first touch electrodes
- one gate line and one first touch electrode are arranged between every two adjacent rows of the pixel units.
- Control electrode The embodiment of the present disclosure does not limit this.
- FIG. 2 shows a circuit structure diagram of each sub-pixel.
- each sub-pixel includes at least one thin film transistor 111, a pixel electrode 114 and a common electrode 113.
- the thin film transistor 111 serves as a switching element and is respectively connected to the gate line 13, the data line 14 and the pixel electrode 114, and the pixel electrode 114 and the common electrode 113 form a capacitor.
- the common electrode 113 and the common electrode line 112 are connected to receive the common electrode signal, the thin film transistor 111 is turned on under the control of the gate scan signal on the gate line 13, and the data signal on the data line 14 is applied to the pixel electrode 114 to The capacitance formed by it and the common electrode 113 is charged to form an electric field to control the deflection of liquid crystal molecules.
- the thin film transistor 111 in the pixel array 110 can be obtained by a conventional semiconductor manufacturing process.
- the active layer 1114 of the thin film transistor 111 is formed on the base substrate 100; the first passivation layer 120 and the gate 1111 are sequentially formed on the active layer 1114 ( Connected to or integrally formed with the gate line 13), the first insulating layer 130, the first electrode 1112 (for example, the source electrode) and the second electrode 1113 (for example, the drain electrode) of the thin film transistor 112, the second insulating layer 150, the common electrode 113 or the second touch electrode 12, the third insulating layer 160 and the pixel electrode 114.
- the gate 1111 of the thin film transistor 111 is connected to a gate driving circuit (not shown in the figure) through a gate line 13 (for example, formed in one line with the gate 1111) to receive a gate scan signal.
- the thin film transistor 111 The first electrode 1112 and the second electrode 1113 are connected to the active layer 1114 through the first passivation layer 120 and the first insulating layer 130 through via holes.
- the first electrode 1112 of the thin film transistor 111 is connected to the data line 14 (as shown in FIG.
- the thin film transistor 111 When the thin film transistor 111 is turned on under the control of the gate scan signal, the data signal provided by the data line 14 is transmitted to the pixel electrode 114, so that an electric field is generated between the pixel electrode 114 and the common electrode 113, and the control is located above it. Or deflection between the liquid crystals.
- the pixel electrode 114 and the common electrode 113 are transparent electrodes, which can be made of transparent metal oxide materials such as indium tin oxide (ITO) or indium zinc oxide (IZO).
- transparent metal oxide materials such as indium tin oxide (ITO) or indium zinc oxide (IZO).
- the materials used for the first electrode 1112, the second electrode 1113, and the gate electrode 1111 of the thin film transistor 111 may include aluminum, aluminum alloy, copper, copper alloy, or any other suitable materials, and the embodiments of the present disclosure do not deal with this. limited.
- the materials of the plurality of first touch electrodes 11, the plurality of gate lines 13 and the gate electrode 1111 are the same, which will not be repeated here.
- the material of the active layer 1114 is low temperature polysilicon. It should be noted that the material of the active layer 1114 may also include oxide semiconductor, organic semiconductor or amorphous silicon, high-temperature polysilicon, etc., for example, the oxide semiconductor includes a metal oxide semiconductor (such as indium gallium zinc oxide (IGZO)), The embodiment of the present disclosure does not limit this.
- IGZO indium gallium zinc oxide
- the materials of the first passivation layer 120, the first insulating layer 130, the second insulating layer 150, and the third insulating layer 160 may include inorganic insulating materials such as SiNx, SiOx, SiNxOy, and organic insulating materials such as organic resins. Or other suitable materials, which are not limited in the embodiments of the present disclosure.
- the plurality of gate lines 13 extend in a first direction (for example, the lateral direction as shown in FIG. 1) in the pixel array 110 to provide gates to the thin film transistors 111 of the respective sub-pixels connected thereto.
- Polar scan signal for example, the lateral direction as shown in FIG. 1
- the plurality of first touch electrodes 11 are disposed on the base substrate 100 and extend along the first direction, that is, the plurality of first touch electrodes 11 are parallel to the plurality of gate lines 13.
- the plurality of first touch electrodes 11 and the plurality of gate lines 13 are arranged in the same layer. For example, they can be formed by a patterning process, so that the preparation of a conductive layer for the first touch electrodes can be reduced, and a preparation process can be omitted. production cost.
- the plurality of first touch electrodes 11 and the plurality of gate lines 13 can be prepared by a conventional patterning process, which will not be repeated here.
- the number of first touch electrodes may be the same as the number of gate lines. That is, as shown in FIG. 1, each row of pixel units P corresponds to one gate line 13 and one first touch control electrode. Electrode 11, which can improve touch accuracy; in other examples, the number of first touch electrodes and the number of gate lines can also be different, for example, one first touch can be arranged at least two rows of pixel units P Electrodes, which can be determined according to actual conditions, as long as they do not affect the display touch function of the display substrate.
- a plurality of gate lines 13 and a plurality of first touch electrodes 11 are located between each row of pixel units, that is, a plurality of gate lines 13 and a plurality of first touch electrodes are formed on a base substrate 100.
- the orthographic projection does not overlap with the orthographic projection of each sub-pixel of the display area on the base substrate 100, and is located between the orthographic projection of each sub-pixel of the display area on the base substrate 100 along the first direction, for example,
- the pixel electrode of each sub-pixel of the display area is between the orthographic projections on the base substrate 100 along the first direction.
- a plurality of second touch electrodes 12 are disposed on the base substrate 100 and are located on the side of the plurality of first touch electrodes 11 away from the base substrate 100, that is, located on the plurality of The upper surface of the first touch electrode 11 extends in a second direction crossing the first direction (for example, the longitudinal direction as shown in FIG. 1 ), and crosses the plurality of first touch electrodes 11.
- a mutual capacitance is formed at the positions where the plurality of second touch electrodes 12 and the plurality of first touch electrodes 11 intersect, and the touch position of the human hand or the stylus is determined by detecting the change point of the mutual capacitance.
- the first touch electrode 11 is used as a touch detection electrode for transmitting touch detection signals;
- the second touch electrode is used as a touch driving electrode for transmitting touch driving signals.
- each second touch electrode covers at least two pixel units and is reused as a common electrode of the at least two pixel units.
- the number of pixel units corresponding to each second touch electrode can be the same, or of course, can also be different, which is not limited in the embodiments of the present disclosure.
- one second touch electrode 12 corresponds to tens or hundreds of sub-pixel units (including red sub-pixel unit R, green sub-pixel unit G, and blue sub-pixel unit).
- the pixel unit B) is not limited in the embodiment of the present disclosure.
- the display phase and the touch phase of the display substrate can be driven in a time-sharing manner.
- the plurality of second touch electrodes can be used as common electrodes to receive common signals on the common signal line 112 to drive the display substrate to display; when the display substrate 1 is in the touch phase At this time, the plurality of second touch electrodes can receive touch driving signals for touch detection.
- the touch phase may be inserted in the blanking phase between two adjacent frames of display pictures to drive the display substrate 1 to realize the display function and the touch function respectively.
- the touch report rate and the display frame rate of the touch screen are the same, for example, both are 60 Hz (HZ).
- multiple touch phases can also be inserted into the display phase of a frame of picture in stages to report a high touch rate (for example, up to 120HZ).
- the driving of the display phase and the touch phase can be realized by controlling the driving timing and circuit structure of the gate driving circuit. It should be noted that the specific circuit and driving method for realizing the display and touch functions of the display substrate can refer to design methods in the art, and will not be repeated here.
- the second touch electrode is formed on the common electrode layer and the first touch electrode is formed on the gate line layer, thereby forming a mutual inductance capacitance, which can make the touch channel on the display substrate
- the number can be reduced to the number of rows + the number of columns.
- the display substrate greatly reduces the number of touch channels and reduces the lower frame of the display panel.
- the number of touch traces reduces the bottom border.
- At least one second touch electrode 12 crosses at least one first touch electrode 11, and at least one second touch electrode 12 further includes at least one second touch electrode 12 An opening 101 at a position crossing at least one first touch electrode 11.
- each second touch electrode 12 may be provided with an opening at the position where it intersects the multiple first touch electrodes 12.
- Openings are provided at the positions where the plurality of first touch electrodes 12 intersect, that is, not all intersecting positions are provided with openings, as long as it can be ensured that the display substrate 1 can accurately implement the touch function.
- the embodiments of the present disclosure are This is not limited.
- the orthographic projection of the opening 101 on the base substrate 100 and the orthographic projection of the at least one first touch electrode 11 on the base substrate at least partially overlap.
- the opening 101 is provided at the position where the second touch electrode and the first touch electrode intersect, so that the mutual capacitance between the second touch electrode located on both sides of the opening 101 and the first touch electrode 11 can be formed.
- the mutual capacitance can be enhanced, and the sensing sensitivity can be improved, and the electric field related to the mutual capacitance can pass through the opening 101, so that it can be acted on by, for example, a human finger or a stylus, thereby improving the sensitivity of the mutual capacitance sensing touch. It can accurately sense or detect human fingers or stylus to realize touch function.
- the display substrate 1 may further include a light shielding layer (not shown in FIG. 4B).
- the light shielding layer is located on a side of the plurality of second touch electrodes 12 away from the base substrate 100, that is, the light shielding layer is located above the second touch electrodes 12.
- the light shielding layer may be formed on the layer where the multiple second touch electrodes of the base substrate 100 are located, or may be formed on the counter substrate of the base substrate 100 (as shown in FIG. 4C).
- the orthographic projections of the plurality of gate lines 13 and the plurality of first touch electrodes 11 on the base substrate 100 all fall within the orthographic projection of the light shielding layer on the base substrate.
- the display substrate 1 includes a base substrate 100 and a counter substrate 200 which are arranged oppositely.
- a liquid crystal layer 30 is provided between the base substrate 100 and the counter substrate 200 and is combined together by, for example, a sealant 40.
- the opposing substrate 200 is usually a color filter substrate, on which a color filter layer including sub-pixels such as red sub-pixel R, green sub-pixel 13, and blue sub-pixel B may be provided, and each sub-pixel is covered by a light-shielding layer 221 (for example, The display area (black matrix) is spaced apart.
- the base substrate 100 shown in FIG. 4C only exemplarily shows a plurality of first touch electrodes 11 and a plurality of gate lines 13.
- a touch chip (not shown in the figure) is further provided on the base substrate 100, and the first touch electrode 11 and the second touch electrode 12 are respectively connected to the touch chip through wires.
- the scanning method detects changes in the capacitance of the plurality of mutual capacitances formed between the plurality of first touch electrodes 11 and the plurality of second touch electrodes 12 to determine the touch position.
- the plurality of second touch electrodes 12 are The orthographic projection of the gap between the two adjacent second touch electrodes on the base substrate also falls within the orthographic projection of the light shielding layer 221 on the base substrate.
- the light shielding layer 221 may include opaque materials such as metal electrodes, dark resins, etc., so as to serve as two adjacent ones of the plurality of gate lines 13, the plurality of first touch electrodes 11, and the plurality of second touch electrodes 12.
- the light shielding effect of the gap between the second touch electrodes prevents the transmitted visible light from affecting its performance.
- the display substrate 1 further includes a plurality of data lines 14.
- the plurality of data lines 14 extend in the second direction in the pixel array 110, that is, the plurality of data lines 14 and the plurality of second touch electrodes 12 are parallel.
- the multiple data lines 14 are located between the multiple second touch electrodes 12 and the multiple first touch electrodes 11 in a direction perpendicular to the base substrate 100, that is, the layer where the multiple data lines 14 are located. It is located between the layer where the plurality of second touch electrodes 12 are located and the layer where the plurality of first touch electrodes 11 are located in a direction perpendicular to the base substrate 100.
- the orthographic projections of the gaps between two adjacent second touch electrodes among the plurality of second touch electrodes 12 on the base substrate respectively fall on the plurality of data lines on the base substrate 100. In the above orthographic projection, it is possible to prevent the light emitted from the backlight source located under the base substrate 100 from being projected onto the counter substrate 200 through the gap between the two adjacent second touch electrodes, thereby affecting the display quality.
- the display substrate 1 further includes: a plurality of first touch electrode traces 15 (not shown in FIG. 1) and a plurality of second touch electrode traces 16 (for clarity and conciseness) , FIG. 4A only schematically shows one second touch electrode wiring 16).
- the plurality of first touch electrode traces 15 and the plurality of second touch electrode traces 16 are arranged in the same layer as the data line 14 and extend along the second direction.
- the materials of the plurality of second touch electrodes 12 and the data lines 14 are the same as the materials of the first electrode 1112 and the second electrode 1113 of the thin film transistor 111, which will not be repeated here.
- each of the plurality of first touch electrode wires 15 is connected to at least one of the plurality of first touch electrodes 11.
- FIG. 3 is a schematic plan view of the wiring of the display substrate shown in FIG. 1;
- FIG. 5 is a schematic plan view of the wiring of the display substrate shown in FIG. 4A.
- a plurality of first touch electrodes 11 are electrically connected to each other in parallel to form a first touch electrode group (for example, the display substrate 1 includes M groups of first touch electrode groups 11_1 , 11_2,...11_m, 11_m+1,...,11_M), M and m are both positive integers, and M is greater than m.
- at least one touch electrode 11 in the first touch electrode group is connected to one of the plurality of first touch electrode wires 15.
- one first touch electrode 11 may also be connected to multiple first touch electrode wires 15 to ensure the transmission of touch detection signals, which is not limited in the embodiment of the present disclosure.
- the plurality of first touch electrode traces 15 and the plurality of second touch electrode traces 16 may be located in the peripheral area of the base substrate 100.
- one of the first touch electrodes in the first touch electrode group 11_1 is connected to the first first touch electrode trace
- one of the first touch electrodes in the first touch electrode group 11_2 One first touch electrode is connected to the second first touch electrode trace, and so on.
- the plurality of first touch electrode traces 15 and the plurality of second touch electrode traces 16 may be located in the pixel array 110, that is, on the base substrate 100 In this way, the left and right borders of the display substrate can be further reduced.
- each first touch electrode in the first touch electrode group can be connected to a first touch electrode trace through a via hole.
- one first touch electrode The electrode traces can also be connected to two or any number of first touch electrodes in the first touch electrode group through via holes, which are not limited in the embodiments of the present disclosure.
- a plurality of first touch electrode traces 15 may run through both ends of the display panel to ensure the uniformity of the display of the display panel.
- the display panel further includes a plurality of dummy touch electrode wires 19, and the plurality of dummy touch electrode wires 19 and the plurality of first touch electrode wires 15 are arranged in parallel.
- a plurality of dummy touch electrode traces are arranged in sections, and each of the plurality of dummy touch electrode traces 19 is connected to only one first touch electrode group.
- a plurality of dummy touch electrode wires 19 and a plurality of first touch electrode wires 15 are respectively arranged between each column of pixel units.
- one dummy touch electrode trace may be provided between every two adjacent columns of pixel units, or multiple traces may be provided, which is not limited in the embodiment of the present disclosure.
- the opening of each pixel unit can be ensured to be consistent, and the display uniformity of the display panel can be improved.
- each first touch electrode group includes a plurality of (for example, at least two) electrically connected to each other in parallel. )
- the first touch electrode 11 enables the touch signals detected by the multiple first touch electrodes in a group of first touch electrode groups to be transmitted through one first touch electrode trace, which can effectively reduce the number of touch channels , Which helps reduce the frame of the display.
- each of the plurality of second touch electrode traces 16 is connected to the plurality of second touch electrodes 12 respectively.
- a plurality of first touch electrodes 11 are connected to the aforementioned touch chip through a plurality of first touch electrode wires 15 to transmit touch detection signals to the touch chip, and a plurality of second touch electrodes 12 pass through a plurality of The second touch electrode trace 16 is connected to the above-mentioned touch chip to receive the touch driving signal provided by the touch chip, so as to realize the touch function.
- the first insulating layer 130 is located between the plurality of first touch electrodes 11 and the data lines 14 in a direction perpendicular to the base substrate, and the plurality of first touch electrodes
- the electrode 11 is connected to a plurality of first touch electrode traces 15 through vias in the first insulating layer 130 to transmit touch detection signals
- the second insulating layer 150 is located in the direction perpendicular to the base substrate between the data lines 14 and 14
- the plurality of second touch electrodes 12 pass through the via holes in the second insulating layer 150 and the plurality of second touch electrode wires 16 (not shown in FIG. 4A, FIG.
- 4B schematically shows that the second touch electrode trace 16) is connected to transmit touch driving signals.
- the plurality of first touch electrode traces 15 and the plurality of second touch electrode traces are located in the pixel array 110, the plurality of first touch electrode traces
- the orthographic projection of the electrode trace 15 and the plurality of second touch electrode traces (not shown in the figure) on the base substrate 100 does not overlap with the orthographic projection of each sub-pixel of the display area on the base substrate 100, for example , Does not overlap with the orthographic projection of the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B defined by the intersection of the plurality of gate lines 13 and the plurality of data lines 14 shown in FIG.
- control electrode wires and the second touch electrode wires block the light emitted by the sub-pixels and affect the display of the display panel.
- the display substrate 1 further includes a bonding area 17 (for electrically connecting the touch chip, etc.), which is located on one side of the peripheral area of the base substrate along the second direction, for example, located on the lower side of the display substrate.
- a bonding area 17 for electrically connecting the touch chip, etc.
- first touch trace 15 and the second touch trace 16 are located in the peripheral area, the farther away from the binding area, the fewer the traces. For example, as shown in FIG. 3, multiple first touch electrodes are routed.
- the line 15 is getting wider and wider on the side away from the binding area along the second direction, so as to keep the resistance of the touch electrode trace far from the binding area and the touch electrode trace close to the binding area the same as possible to improve the touch control. Accuracy.
- the conductive layer separately used for preparing the touch electrode can be reduced, and the preparation process can be simplified.
- Reduce manufacturing costs; at least one embodiment of the present disclosure also forms a second touch electrode on the common electrode layer and a first touch electrode on the gate line layer, thereby mutual inductance capacitance, so that the number of touch channels on the display substrate It can be reduced to the number of rows + the number of columns, which greatly reduces the number of touch channels, reduces the number of touch traces in the lower frame of the display panel, and reduces the frame.
- FIG. 6 is a schematic diagram of a display device provided by at least one embodiment of the present disclosure.
- the display device 10 includes a display substrate 1 provided in any embodiment of the present disclosure, for example, the display substrate 1 shown in FIG. 1 or FIG. 4A.
- the display device may be a liquid crystal display device.
- the liquid crystal display device may be an in-plane switching type (IPS), an in-plane switching type (Fringe Field Switching, FFS), a twisted nematic type (TN) and a vertical alignment type (Vertical Alignment). , VA), the embodiment of the present disclosure does not limit this.
- At least one embodiment of the present disclosure also provides a manufacturing method of the display substrate.
- Fig. 7 shows a flow chart of a manufacturing method of a display substrate.
- the manufacturing method can be used to manufacture the display substrate provided by any embodiment of the present disclosure.
- it can be used to make the display substrate shown in FIG. 4B.
- the manufacturing method of the display substrate includes step S110 to step S140.
- Step S110 Provide a base substrate.
- Step S120 forming a pixel array on the base substrate.
- Step S130 forming a first conductive layer on the base substrate, and forming a plurality of gate lines and a plurality of first touch electrodes extending in a first direction by a patterning process on the first conductive layer.
- Step S140 On the side of the plurality of first touch electrodes away from the base substrate, forming a plurality of second touch electrodes extending in a second direction crossing the first direction and crossing the plurality of first touch electrodes .
- the base substrate 100 can be made of, for example, glass, plastic, quartz, or other suitable materials, which is not limited in the embodiment of the present disclosure.
- the base substrate 100 includes a display area and a peripheral area (not shown in the figure).
- the pixel array is located in the display area of the base substrate 100.
- the pixel array 110 includes a plurality of pixel units P arranged in an array.
- a display substrate here, an array substrate
- a plurality of gate lines 13 and a plurality of data lines 14 intersect each other to define a plurality of sub-pixels.
- each of the plurality of pixel units P includes Rows of red, green, and blue (RGB) sub-pixels, that is, the pixel array includes a plurality of sub-pixels arrayed in a first direction and a second direction.
- Figure 2 shows a circuit structure diagram of each sub-pixel. As shown in FIG.
- each sub-pixel includes at least one thin film transistor 111, a pixel electrode 114 and a common electrode 113.
- the thin film transistor 111 serves as a switching element and is respectively connected to the gate line 13, the data line 14 and the pixel electrode 114, and the pixel electrode 114 and the common electrode 113 form a capacitor.
- the common electrode 113 and the common electrode line 112 are connected to receive the common electrode signal, the thin film transistor 111 is turned on under the control of the gate scan signal on the gate line 13, and the data signal on the data line 14 is applied to the pixel electrode 114 to The capacitance formed by it and the common electrode 113 is charged to form an electric field to control the deflection of liquid crystal molecules.
- the thin film transistor 111 in the pixel array 110 can be obtained by a conventional semiconductor manufacturing process.
- the active layer 1114 of the thin film transistor 111 is formed on the base substrate 100; the first passivation layer 120 and the gate 1111 are sequentially formed on the active layer 1114 ( Connected to or integrally formed with the gate line 13, located in the first conductive layer), the first insulating layer 130, the first electrode 1112 (for example, the source) and the second electrode 1113 (for example, the drain) of the thin film transistor 112 (the second Conductive layer), the second insulating layer 150, the common electrode 113 or the second touch electrode 12, the third insulating layer 160 and the pixel electrode 114.
- the gate 1111 of the thin film transistor 111 is connected to a gate driving circuit (not shown in the figure) through a gate line 13 (for example, connected to the gate 1111 or formed integrally) to receive a gate scan signal.
- the first electrode 1112 and the second electrode 1113 of the transistor 111 are connected to the active layer 1114 through the via holes in the first passivation layer 120 and the first insulating layer 130.
- the first electrode 1112 of the thin film transistor 111 is connected to the data line 14 (as shown in FIGS.
- the thin film transistor 111 When the thin film transistor 111 is turned on under the control of the gate scan signal, the data signal provided by the data line 14 is transmitted to the pixel electrode 114, so that an electric field is generated between the pixel electrode 114 and the common electrode 113, and the control is located above it. Or deflection between the liquid crystals.
- the pixel electrode 114 and the common electrode 113 are transparent electrodes, which can be made of transparent metal oxide materials such as indium tin oxide (ITO) or indium zinc oxide (IZO).
- transparent metal oxide materials such as indium tin oxide (ITO) or indium zinc oxide (IZO).
- the material used for the first electrode 1112, the second electrode 1113, and the gate electrode 1111 of the thin film transistor 111 may include aluminum, aluminum alloy, copper, copper alloy, or Any other suitable materials are not limited in the embodiments of the present disclosure.
- the materials of the plurality of first touch electrodes 11, the plurality of gate lines 13 and the gate electrode 1111 are the same, which will not be repeated here.
- the material of the active layer 1114 may include oxide semiconductor, organic semiconductor or amorphous silicon, polysilicon, etc.
- the oxide semiconductor includes a metal oxide semiconductor (such as indium gallium zinc oxide (IGZO)), and the polysilicon includes Low-temperature polysilicon or high-temperature polysilicon, etc., which are not limited in the embodiments of the present disclosure.
- IGZO indium gallium zinc oxide
- the materials of the first passivation layer 120, the first insulating layer 130, the second insulating layer 150, and the third insulating layer 160 may include inorganic insulating materials such as SiNx, SiOx, SiNxOy, and organic insulating materials such as organic resins. Or other suitable materials, which are not limited in the embodiments of the present disclosure.
- a plurality of first touch electrodes 11 and a plurality of gate lines 13 extending in the first direction are formed on the first conductive layer through a single patterning process, which can reduce the cost of using the first touch electrodes alone.
- the conductive layer one preparation process is omitted, and the manufacturing cost is reduced.
- the plurality of first touch electrodes 11 and the plurality of gate lines 13 can be prepared by a conventional patterning process, which will not be repeated here.
- a plurality of gate lines 13 and a plurality of first touch electrodes 11 are located between each row of pixel units, that is, a plurality of gate lines 13 and a plurality of first touch electrodes are formed on a base substrate 100.
- the orthographic projection does not overlap with the orthographic projection of each sub-pixel of the display area on the base substrate 100, and is located between the orthographic projection of each sub-pixel of the display area on the base substrate 100 along the first direction, for example,
- the pixel electrode of each sub-pixel of the display area is between the orthographic projections on the base substrate 100 along the first direction.
- the first insulating layer 120 is covered on the first conductive layer (that is, the plurality of first touch electrodes 11 and the plurality of gate lines 13), and a first insulating layer 120 is formed on the first insulating layer 120.
- Two conductive layers ie, multiple data lines, multiple first touch traces 15, multiple second touch traces 16
- a second insulating layer 150 is formed on the second conductive layer
- the second insulating layer 150 A plurality of second touch electrodes 12 extending along a second direction crossing the first direction are formed on the upper surface, and intersecting the plurality of first touch electrodes 11.
- a mutual capacitance is formed at the positions where the plurality of second touch electrodes 12 and the plurality of first touch electrodes 11 intersect, and the touch position of the human hand or the stylus is determined by detecting the change point of the mutual capacitance.
- the first touch electrode 11 is used as a touch detection electrode for transmitting touch detection signals; the second touch electrode is used as a touch driving electrode for transmitting touch driving signals.
- each of the plurality of second touch electrodes covers at least two pixel units, and is reused as a common electrode of the at least two pixel units.
- an opening 101 is formed on at least one of the plurality of second touch electrodes 12.
- the position where the opening 101 crosses the at least one first touch electrode 11 on the at least one second touch electrode 12, that is, the orthographic projection of the opening 101 on the base substrate and the orthographic projection of the at least one first touch electrode are at least partially overlapping.
- the opening 101 is provided at the position where the second touch electrode and the first touch electrode intersect, so that the mutual capacitance between the second touch electrode located on both sides of the opening 101 and the first touch electrode 11 can be formed.
- the mutual capacitance can be enhanced and the sensing sensitivity can be improved, and the electric field related to the mutual capacitance can pass through the opening 101 so as to be acted on by, for example, a human finger or a stylus, thereby improving the sensitivity of the mutual capacitance sensing touch.
- a human finger or a stylus Accurately sense or detect human fingers or stylus to realize touch function.
- a light shielding layer (not shown in the figure) is formed on the plurality of second touch electrodes 12.
- the orthographic projections of the plurality of gate lines 13 and the plurality of first touch electrodes 11 on the base substrate 100 all fall within the orthographic projection of the light shielding layer on the base substrate 100, and the plurality of second touch electrodes 12 are adjacent
- the orthographic projection of the gap between the two second touch electrodes on the base substrate 100 also falls within the orthographic projection of the light-shielding layer on the base substrate 100, so that the transmitted visible light can be prevented from irradiating the multiple grid lines 13,
- the gap between two adjacent second touch electrodes among the plurality of first touch electrodes 11 and the plurality of second touch electrodes 12 is to prevent the transmitted visible light from affecting its performance.
- the light shielding layer may be located on the opposite substrate opposite to the base substrate 100.
- the display substrate 1 includes a display substrate 100 and a counter substrate 200 which are arranged oppositely.
- a liquid crystal layer 30 is provided between the base substrate 100 and the counter substrate 200 and is bonded together by, for example, a sealant 40. Form a liquid crystal cell.
- the opposing substrate 200 is usually a color filter substrate, on which a color filter layer including sub-pixels such as red sub-pixel R, green sub-pixel 13, and blue sub-pixel B may be provided, and each sub-pixel is covered by a light-shielding layer 221 (for example, The display area (black matrix) is spaced apart, and the color filter layer is surrounded by the peripheral black matrix 222 disposed in the peripheral area.
- a color filter layer including sub-pixels such as red sub-pixel R, green sub-pixel 13, and blue sub-pixel B may be provided, and each sub-pixel is covered by a light-shielding layer 221 (for example,
- the display area (black matrix) is spaced apart, and the color filter layer is surrounded by the peripheral black matrix 222 disposed in the peripheral area.
- the light-shielding layer 221 may include opaque materials such as metal electrodes, dark resin, etc., so as to serve as a grid line, a plurality of first touch electrodes, and a plurality of second touch electrodes 12 adjacent to two second touch electrodes.
- the gap between the electrodes shields the light, preventing the transmitted visible light from affecting its performance.
- the light-shielding layer can be prepared by a patterning process in the art, which will not be repeated here.
- a patterning process may be used on the second conductive layer to form a plurality of data lines 14, a plurality of first touch electrode traces 15, a plurality of second touch electrode traces 16, and a thin film transistor extending in the second direction. 111 of the first pole 1112 and the second pole 1113.
- a plurality of data lines 14 are located in the pixel array, and the orthographic projection of the gap between two adjacent second touch electrodes of the plurality of second touch electrodes 12 on the base substrate falls on the data line on the substrate.
- the light emitted by the backlight source located under the base substrate 100 can be prevented from being projected onto the counter substrate 200 through the gap between two adjacent second touch electrodes, which affects the display quality.
- each of the plurality of first touch electrode traces 15 is connected to at least one of the plurality of first touch electrodes 15 through a via on the first insulating layer 130 to transmit the touch.
- each of the plurality of second touch electrode traces 16 is connected to the plurality of second touch electrodes 12 through the via holes on the second insulating layer 150 to transmit the touch driving signal.
- the first touch electrode line and the second touch electrode line are respectively connected to the touch chip located on the lower side of the base substrate (for example, located in the bonding area).
- the orthographic projection does not overlap.
- the red sub-pixel R, the green sub-pixel G, and the blue sub-pixel B defined by the intersection of the plurality of gate lines 13 and the plurality of data lines 14 shown in FIG.
- the orthographic projections do not overlap, and are located between the orthographic projections of the respective sub-pixels in the display area on the base substrate, for example, are located between the orthographic projections of the pixel electrodes of the above-mentioned sub-pixels on the base substrate 100, namely The plurality of first touch electrode traces 15 and the plurality of second touch electrode traces 16 are located in the display area, so that the left and right borders of the display substrate can be further reduced.
- a plurality of first touch electrode traces 15 and a plurality of second touch electrode traces 16 extending in the second direction are formed on the second conductive layer.
- the display substrate 1 further includes a binding area 17 (used to electrically connect the touch chip, etc.), which is located on the side of the peripheral area of the base substrate along the second direction, for example, on the lower side of the display substrate .
- a binding area 17 used to electrically connect the touch chip, etc.
- the multiple first touch electrode traces 15 are getting wider and wider on the side away from the binding area along the second direction, so as to keep as far away from the binding area as possible.
- the resistance of the touch electrode trace and the touch electrode trace near the binding area are the same, which improves the touch accuracy.
- the flow of the method for manufacturing the display substrate may include more or fewer operations, and these operations may be performed sequentially or in parallel.
- the flow of the manufacturing method described above includes multiple operations appearing in a specific order, it should be clearly understood that the order of the multiple operations is not limited.
- the above-described production method can be executed once or multiple times according to predetermined conditions.
- An embodiment of the present disclosure also provides a driving method of a display substrate.
- the driving method can be used to drive the display substrate provided by any embodiment of the present disclosure to realize touch control and display.
- the display substrate shown in FIG. 1 or FIG. 4A can be driven.
- the driving method includes the following steps:
- a touch drive signal is provided to the plurality of second touch electrodes 12, and a touch detection signal is received at the plurality of first touch electrodes 11.
- the plurality of second touch electrodes can be used as common electrodes to receive common signals on the common signal line 112 to drive the display substrate 1 to display; when the display substrate 1 is in touch In the stage, the plurality of second touch electrodes can receive touch driving signals for touch detection.
- the touch phase may be inserted in the blanking phase between two adjacent frames of display pictures to drive the display substrate 1 to realize the display function and the touch function respectively.
- the touch report rate and the display frame rate of the touch screen are the same, for example, both are 60 Hz (HZ).
- multiple touch phases can also be inserted into the display phase of a frame of picture in stages to report a high touch rate (for example, up to 120HZ).
- the driving of the display phase and the touch phase can be realized by controlling the driving timing and circuit structure of the gate driving circuit. It should be noted that the specific circuit and driving method for realizing the display and touch functions of the display substrate can refer to design methods in the art, and will not be repeated here.
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Abstract
Description
Claims (21)
- 一种显示基板,包括:A display substrate includes:衬底基板;Base substrate像素阵列,设置在所述衬底基板上;The pixel array is arranged on the base substrate;多条栅线,在所述像素阵列中沿第一方向延伸;A plurality of gate lines extending along a first direction in the pixel array;多条第一触控电极,设置在所述衬底基板上并沿所述第一方向延伸;A plurality of first touch electrodes arranged on the base substrate and extending along the first direction;多条第二触控电极,设置在所述衬底基板上且位于所述多条第一触控电极远离所述衬底基板的一侧,沿与所述第一方向交叉的第二方向延伸,与所述多条第一触控电极相交叉;A plurality of second touch electrodes are disposed on the base substrate and are located on a side of the plurality of first touch electrodes away from the base substrate, and extend along a second direction crossing the first direction , Crossing the plurality of first touch electrodes;其中,所述多条第一触控电极和所述多条栅线同层设置。Wherein, the plurality of first touch electrodes and the plurality of gate lines are arranged in the same layer.
- 根据权利要求1所述的显示基板,其中,所述像素阵列包括多个像素单元,所述多条第二触控电极的每条覆盖至少两个像素单元,并且复用作所述至少两个像素单元的公共电极。The display substrate according to claim 1, wherein the pixel array includes a plurality of pixel units, and each of the plurality of second touch electrodes covers at least two pixel units and is reused as the at least two pixel units. The common electrode of the pixel unit.
- 根据权利要求2所述的显示基板,其中,The display substrate according to claim 2, wherein:至少一条所述第二触控电极包括设置在所述至少一条第二触控电极与所述至少一条第一触控电极交叉的位置的开口,所述开口在所述衬底基板上的正投影与所述至少一条第一触控电极在所述衬底基板上的正投影至少部分重叠。The at least one second touch electrode includes an opening arranged at a position where the at least one second touch electrode crosses the at least one first touch electrode, and the orthographic projection of the opening on the base substrate At least partially overlapping with the orthographic projection of the at least one first touch electrode on the base substrate.
- 根据权利要求1-3任一所述的显示基板,还包括遮光层,其中,所述遮光层位于所述多条第二触控电极远离所述衬底基板的一侧,The display substrate according to any one of claims 1 to 3, further comprising a light shielding layer, wherein the light shielding layer is located on a side of the plurality of second touch electrodes away from the base substrate,所述多条栅线和所述多条第一触控电极在所述衬底基板上的正投影均落入所述遮光层在所述衬底基板上的正投影内。The orthographic projections of the plurality of gate lines and the plurality of first touch electrodes on the base substrate all fall within the orthographic projections of the light shielding layer on the base substrate.
- 根据权利要求4所述的显示基板,其中,所述多条第二触控电极中相邻两条第二触控电极之间的间隙在所述衬底基板上的正投影也落入所述遮光层在所述衬底基板上的正投影内。4. The display substrate of claim 4, wherein the orthographic projection of the gap between two adjacent second touch electrodes in the plurality of second touch electrodes on the base substrate also falls within the The light shielding layer is in the orthographic projection on the base substrate.
- 根据权利要求1-5任一所述的显示基板,还包括多条数据线,其中,所述多条数据线在所述像素阵列中沿所述第二方向延伸,在垂直于所述衬底基板的方向上位于所述多条第二触控电极和所述多条第一触控电极之间,其中,The display substrate according to any one of claims 1-5, further comprising a plurality of data lines, wherein the plurality of data lines extend along the second direction in the pixel array, and are perpendicular to the substrate The substrate is located between the plurality of second touch electrodes and the plurality of first touch electrodes in the direction of the substrate, wherein:所述多条第二触控电极中相邻两条第二触控电极之间的间隙在所述衬底基板上的正投影分别落在所述多条数据线在所述衬底基板上的正投影内。The orthographic projection of the gap between two adjacent second touch electrodes in the plurality of second touch electrodes on the base substrate respectively falls on the projections of the plurality of data lines on the base substrate In orthographic projection.
- 根据权利要求6所述的显示基板,还包括:The display substrate according to claim 6, further comprising:多条第一触控电极走线和多条第二触控电极走线,与所述数据线同层设置且沿所述第二方向延伸;其中,A plurality of first touch electrode traces and a plurality of second touch electrode traces are arranged on the same layer as the data line and extend along the second direction; wherein,所述多条第一触控电极走线中的每条与所述多条第一触控电极中的至少一条连接,Each of the plurality of first touch electrode traces is connected to at least one of the plurality of first touch electrodes,所述多条第二触控电极走线与所述多条第二触控电极分别连接。The plurality of second touch electrode traces are respectively connected to the plurality of second touch electrodes.
- 根据权利要求7所述的显示基板,还包括第一绝缘层和第二绝缘层;其中,8. The display substrate according to claim 7, further comprising a first insulating layer and a second insulating layer; wherein,所述第一绝缘层在垂直于所述衬底基板的方向上位于所述多条第一触控电极和所述数据线之间,且所述多条第一触控电极通过所述第一绝缘层上的过孔与所述多条第一触控电极走线连接,The first insulating layer is located between the plurality of first touch electrodes and the data line in a direction perpendicular to the base substrate, and the plurality of first touch electrodes pass through the first The via on the insulating layer is connected to the plurality of first touch electrode traces,所述第二绝缘层在垂直于所述衬底基板的方向上位于所述数据线和所述多条第二触控电极之间,且所述多条第二触控电极通过所述第二绝缘层上的过孔与所述多条第二触控电极走线连接。The second insulating layer is located between the data line and the plurality of second touch electrodes in a direction perpendicular to the base substrate, and the plurality of second touch electrodes pass through the second The via holes on the insulating layer are connected to the plurality of second touch electrode traces.
- 根据权利要求7或8所述的显示基板,其中,所述衬底基板包括显示区和周边区,所述像素阵列位于所述显示区,所述像素阵列包括沿所述第一方向和所述第二方向阵列排布的多个子像素;其中,8. The display substrate according to claim 7 or 8, wherein the base substrate includes a display area and a peripheral area, the pixel array is located in the display area, and the pixel array includes A plurality of sub-pixels arranged in an array in the second direction; wherein,所述多条第一触控电极走线和所述多条第二触控电极走线在所述衬底基板上的正投影与所述显示区的各个子像素在所述衬底基板上的正投影不重叠,且分别位于所述显示区的各个子像素在所述衬底基板上的正投影之间。The orthographic projection of the plurality of first touch electrode traces and the plurality of second touch electrode traces on the base substrate and each sub-pixel of the display area on the base substrate The orthographic projections do not overlap and are located between the orthographic projections of the respective sub-pixels of the display area on the base substrate.
- 根据权利要求7或8所述的显示基板,其中,所述衬底基板包括显示区和周边区,所述像素阵列位于所述显示区,所述像素阵列包括沿所述第一方向和所述第二方向阵列排布的多个子像素;其中,8. The display substrate according to claim 7 or 8, wherein the base substrate includes a display area and a peripheral area, the pixel array is located in the display area, and the pixel array includes A plurality of sub-pixels arranged in an array in the second direction; wherein,所述多条第一触控电极走线和所述多条第二触控电极走线分别位于所述周边区。The plurality of first touch electrode traces and the plurality of second touch electrode traces are respectively located in the peripheral area.
- 根据权利要求9或10所述的显示基板,其中,所述多条栅线和所述多条第一触控电极在所述衬底基板上的正投影与所述显示区的各个子像素在所述衬底基板上的正投影不重叠,且分别位于所述显示区的各个子像素沿所 述第一方向在所述衬底基板上的正投影之间。The display substrate according to claim 9 or 10, wherein the orthographic projection of the plurality of gate lines and the plurality of first touch electrodes on the base substrate is in alignment with each sub-pixel of the display area The orthographic projections on the base substrate do not overlap, and are respectively located between the orthographic projections of the respective sub-pixels of the display area on the base substrate along the first direction.
- 根据权利要求10所述的显示基板,还包括:The display substrate according to claim 10, further comprising:绑定区,位于所述衬底基板的周边区域沿所述第二方向的一侧;其中,The binding area is located on one side of the peripheral area of the base substrate along the second direction; wherein,所述多条第一触控电极走线沿所述第二方向在远离所述绑定区的一侧越来越宽。The plurality of first touch electrode traces become wider and wider on the side away from the binding area along the second direction.
- 根据权利要求7-12任一所述的显示基板,其中,所述多条第一触控电极包括多个第一触控电极组,所述多个第一触控电极组的每个包括彼此电连接以并联的至少两条第一触控电极;其中,15. The display substrate according to any one of claims 7-12, wherein the plurality of first touch electrodes comprise a plurality of first touch electrode groups, and each of the plurality of first touch electrode groups comprises each other At least two first touch electrodes connected in parallel are electrically connected; wherein,所述第一触控电极组中的至少一条第一触控电极分别与所述多条第一触控电极走线中的其中之一连接。At least one first touch electrode in the first touch electrode group is respectively connected to one of the plurality of first touch electrode traces.
- 根据权利要求13所述的显示基板,其中,所述像素阵列包括M行N列像素单元,所述显示面板包括Q条栅线和Q条第一触控电极,且在每相邻两行所述像素单元之间设置一条栅线和一条第一触控电极;13. The display substrate according to claim 13, wherein the pixel array includes M rows and N columns of pixel units, the display panel includes Q gate lines and Q first touch electrodes, and each adjacent two rows A gate line and a first touch electrode are arranged between the pixel units;所述显示面板还包括多条虚设触控电极走线,所述多条虚设触控电极走线与所述多条第一触控电极走线平行设置,且所述多条虚设触控电极走线中的每条仅与一个第一触控电极组连接,所述多条虚设触控电极走线和所述多条第一触控电极走线分别设置在各列像素单元之间;The display panel further includes a plurality of dummy touch electrode traces, the plurality of dummy touch electrode traces are arranged in parallel with the plurality of first touch electrode traces, and the plurality of dummy touch electrode traces Each of the lines is connected to only one first touch electrode group, and the plurality of dummy touch electrode traces and the plurality of first touch electrode traces are respectively arranged between each column of pixel units;其中,Q、N均为大于等于2的整数。Wherein, Q and N are both integers greater than or equal to 2.
- 一种显示装置,包括权利要求1-14任一所述的显示基板。A display device comprising the display substrate according to any one of claims 1-14.
- 一种显示基板的制作方法,包括:A manufacturing method of a display substrate includes:提供衬底基板;Provide base plate;在所述衬底基板上形成像素阵列;Forming a pixel array on the base substrate;在所述衬底基板上形成第一导电层,在所述第一导电层上采用一次构图工艺形成沿第一方向延伸的多条栅线和多条第一触控电极;Forming a first conductive layer on the base substrate, and forming a plurality of gate lines and a plurality of first touch electrodes extending in a first direction by a patterning process on the first conductive layer;在位于所述多条第一触控电极远离所述衬底基板的一侧,形成沿与所述第一方向交叉的第二方向延伸多条第二触控电极,与所述多条第一触控电极相交叉。On a side of the plurality of first touch electrodes away from the base substrate, a plurality of second touch electrodes are formed extending in a second direction crossing the first direction, and the plurality of first touch electrodes are The touch electrodes cross each other.
- 根据权利要求16所述的显示基板的制作方法,还包括:The method of manufacturing a display substrate according to claim 16, further comprising:在所述多条第二触控电极的至少一条上形成开口;其中,An opening is formed on at least one of the plurality of second touch electrodes; wherein,所述开口在所述至少一条第二触控电极上与至少一条所述第一触控电极 交叉的位置,The position where the opening crosses the at least one first touch electrode on the at least one second touch electrode,所述开口在所述衬底基板上的正投影与所述至少一条第一触控电极的正投影至少部分重叠。The orthographic projection of the opening on the base substrate and the orthographic projection of the at least one first touch electrode at least partially overlap.
- 根据权利要求16或17所述的显示基板的制作方法,还包括:The manufacturing method of the display substrate according to claim 16 or 17, further comprising:在所述多条第二触控电极上形成遮光层,其中,所述多条栅线和所述多条第一触控电极在所述衬底基板上的正投影均落入所述遮光层在所述衬底基板上的正投影内。A light shielding layer is formed on the plurality of second touch electrodes, wherein the orthographic projections of the plurality of gate lines and the plurality of first touch electrodes on the base substrate all fall into the light shielding layer In the orthographic projection on the base substrate.
- 根据权利要求16-18任一所述的显示基板的制作方法,还包括:18. The method of manufacturing a display substrate according to any one of claims 16-18, further comprising:在垂直于所述衬底基板的方向上且在所述多条第一触控电极和所述多条第二触控电极之间,依次形成第一绝缘层、第二导电层和第二绝缘层;In a direction perpendicular to the base substrate and between the plurality of first touch electrodes and the plurality of second touch electrodes, a first insulating layer, a second conductive layer, and a second insulating layer are sequentially formed Floor;在所述第二导电层上采用一次构图工艺形成沿所述第二方向延伸的多条数据线、多条第一触控电极走线和多条第二触控电极走线;其中,A plurality of data lines, a plurality of first touch electrode traces, and a plurality of second touch electrode traces extending along the second direction are formed on the second conductive layer by a patterning process; wherein,所述数据线位于所述像素阵列中,所述多条第二触控电极中相邻两条第二触控电极之间的间隙在所述衬底基板上的正投影落在所述数据线在所述衬底基板上的正投影内,The data line is located in the pixel array, and the orthographic projection of the gap between two adjacent second touch electrodes in the plurality of second touch electrodes on the base substrate falls on the data line In the orthographic projection on the base substrate,所述多条第一触控电极走线每条通过所述第一绝缘层上的过孔与所述多条第一触控电极中的至少一条连接,Each of the plurality of first touch electrode traces is connected to at least one of the plurality of first touch electrodes through a via hole on the first insulating layer;所述多条第二触控电极走线每条通过所述第二绝缘层上的过孔与所述多条第二触控电极分别连接。Each of the plurality of second touch electrode traces is respectively connected to the plurality of second touch electrodes through a via hole on the second insulating layer.
- 根据权利要求19所述的显示基板的制作方法,其中,所述衬底基板包括显示区和周边区,所述像素阵列位于所述显示区,所述像素阵列包括沿所述第一方向和所述第二方向阵列排布的多个子像素,其中,The method for manufacturing a display substrate according to claim 19, wherein the base substrate includes a display area and a peripheral area, the pixel array is located in the display area, and the pixel array includes The plurality of sub-pixels arranged in an array in the second direction, wherein:在所述衬底基板的周边区,在所述第二导电层上形成沿所述第二方向延伸的多条第一触控电极走线和多条第二触控电极走线。In the peripheral area of the base substrate, a plurality of first touch electrode traces and a plurality of second touch electrode traces extending along the second direction are formed on the second conductive layer.
- 一种如权利要求1-14任一所述的显示基板的驱动方法,包括:A method for driving a display substrate according to any one of claims 1-14, comprising:在显示阶段,向所述多条栅线提供栅极扫描信号,向所述第二触控电极提供公共信号,以驱动所述显示基板进行显示;In the display stage, providing gate scan signals to the plurality of gate lines and providing common signals to the second touch electrodes to drive the display substrate for display;在触控阶段,向所述多条第二触控电极提供触控驱动信号,在所述多条第一触控电极接收触控检测信号。In the touch phase, a touch drive signal is provided to the plurality of second touch electrodes, and a touch detection signal is received at the plurality of first touch electrodes.
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